Question 57Steam Plants - QMED
70% to passThe leakage of air into the pump casing by way of the packing gland of a condensate pump, is prevented by _______________.
Aa water seal line to the packing gland
Ban air seal line from the compressed air line
Cspecial packing in the stuffing box
Dthe vacuum in the pump suction
AI Explanation
The correct answer is A) a water seal line to the packing gland. The water seal line helps prevent air leakage into the pump casing by maintaining a positive pressure at the packing gland. This water seal creates a barrier that stops air from being drawn into the pump suction, which could disrupt the pump's operation. The other options are incorrect because: B) an air seal line would not effectively prevent air leakage, C) special packing alone may not be sufficient to stop air intrusion, and D) the vacuum in the pump suction would actually draw air into the casing if not properly sealed.
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